using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

//https://stackoverflow.com/questions/62800996/how-to-deserialize-an-objects-property-with-a-specific-derived-class

​

using Debug = System.Console;

​

namespace Equipment.Shared.Model

{

    public class SimCard

    {

        protected SimCard() { }

    }

}

​

    public class SimCard : Equipment.Shared.Model.SimCard

    {

        public SimCard() : base()

        {

            Debug.WriteLine("My SimCard created.");

        }

    }

​

    public class TlsModelContractResolver : DefaultContractResolver

    {

        protected override JsonContract CreateContract(Type objectType)

        {

            JsonContract contract = base.CreateContract(objectType);

​

            if (objectType == typeof(Equipment.Shared.Model.SimCard) )

            {

                contract.CreatedType = typeof(SimCard);

                Debug.WriteLine("Simcard CreateType is updated");

                contract.DefaultCreator = () => new SimCard();

                contract.DefaultCreatorNonPublic = false;

            }

​

            return contract;

        }

    }

​

    public class SimCardConverter : CustomCreationConverter<Equipment.Shared.Model.SimCard>

    {

        public override bool CanConvert(Type objectType) { return typeof(Equipment.Shared.Model.SimCard) == objectType; }

        public override Equipment.Shared.Model.SimCard Create(Type objectType) { return new SimCard(); }

    }

​

    class TestClass

    {

        public static void Test()

        {

            TestResolver();

            TestConverter();

        }

        public static void TestResolver()

        {

            var resolver = new TlsModelContractResolver();

            var settings = new JsonSerializerSettings

            {

                ContractResolver = resolver,

            };

            var simcard = JsonConvert.DeserializeObject<Equipment.Shared.Model.SimCard>("{}", settings);

            Assert.AreEqual(simcard.GetType(), typeof(SimCard));

        }   

        public static void TestConverter()

        {

            var settings = new JsonSerializerSettings

            {

                Converters = { new SimCardConverter() },

            };

            var simcard = JsonConvert.DeserializeObject<Equipment.Shared.Model.SimCard>("{}", settings);

            Assert.AreEqual(simcard.GetType(), typeof(SimCard));

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​